Re: [HACKERS] Should we cacheline align PGXACT? - Mailing list pgsql-hackers

From Alexander Korotkov
Subject Re: [HACKERS] Should we cacheline align PGXACT?
Date
Msg-id CAPpHfdsca5=XpX+5e2SWoxKHgL_yf40yFN-BzVaPUZBUvSai9A@mail.gmail.com
Whole thread Raw
In response to Re: [HACKERS] Should we cacheline align PGXACT?  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: [HACKERS] Should we cacheline align PGXACT?  (Ashutosh Sharma <ashu.coek88@gmail.com>)
Re: [HACKERS] Should we cacheline align PGXACT?  (Alvaro Herrera <alvherre@2ndquadrant.com>)
List pgsql-hackers
On Thu, Feb 16, 2017 at 4:58 PM, Robert Haas <robertmhaas@gmail.com> wrote:
On Thu, Feb 16, 2017 at 5:07 AM, Alexander Korotkov
<a.korotkov@postgrespro.ru> wrote:
> On Wed, Feb 15, 2017 at 8:49 PM, Alvaro Herrera <alvherre@2ndquadrant.com>
> wrote:
>> Alexander Korotkov wrote:
>>
>> > Difference between master, pgxact-align-2 and pgxact-align-3 doesn't
>> > exceed
>> > per run variation.
>>
>> FWIW this would be more visible if you added error bars to each data
>> point.  Should be simple enough in gnuplot ...
>
> Good point.
> Please find graph of mean and errors in attachment.

So ... no difference?

Yeah, nothing surprising.  It's just another graph based on the same data.
I wonder how pgxact-align-3 would work on machine of Ashutosh Sharma, because I observed regression there in write-heavy benchmark of pgxact-align-2.

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company 

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